The Frontier Gazette & Almanack
“Fair Warning for Every Town Under the Sky” · Est. 1881
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Smiths Falls Weather in May

Smiths Falls in May

The short of it: Smiths Falls in May averages a high of 18 °C (64 °F) and a low of 7 °C (44 °F), with 80 mm (3.1 in) of rain and about 14 h 49 min of daylight. Rated 3 of 5 for a visit; the best months are June and September. Source: TerraClimate climate normals, 1991–2020.

Average high 18° · low 7° · rain 80 mm · daylight 14 h 49 min

✦✦✦ Fair for a visit · best months: June & September

Thirty years of records give Smiths Falls an average May high of 18°, a low of 7° and some 80 mm of rain. Highs rise 8° against April, to near 18°; nights run about 7°. Wet spells are common — about 80 mm, the 6th wettest month. The snow cover usually melts away this month.

The sun is up for about 14 h 49 min in mid-May, 83 minutes more than a month before.

For the traveller: pack layers, a wool coat and stout boots, and an oilskin besides. The Almanac rates May 3 of 5 for a visit; the finest months here are June and September.

Against its neighbours, Smiths Falls runs warmer than most and about as wet in May. Perth, 18 km to the W, sees much the same highs.

May in Smiths Falls, by the numbers

Warmth rank
5th warmest of 12
Rain rank
6th wettest of 12
Versus April
8° warmer, 1.0 mm more rain
Versus June
5° colder
Day–night spread
11°
Snow season
Nov–Apr
Daylight, mid-month
14 h 49 min
Average wind
13 km/h

Neighbouring Towns

May averages · distance by the crow’s flight
TownDistanceHighLowRain
PerthOntario18 km W18°6°81 mm
Carleton PlaceOntario27 km NNW18°6°76 mm
AlmonteOntario39 km NNW18°6°72 mm
Mississippi MillsOntario39 km NNW18°6°72 mm
StittsvilleOntario39 km NNE19°7°82 mm
BrockvilleOntario44 km SE18°7°81 mm
BridlewoodOntario44 km NNE19°7°83 mm
Glen CairnOntario45 km NNE19°7°83 mm

The Almanac · Smiths Falls Month by Month

Climate normals 1991–2020 · pick a month
PrecipitationAverage highAverage low
Fair
The Almanac Speaks
May
✦✦✦✦✦

Highs rise 8° against April, to near 18°; nights run about 7°. Wet spells are common — about 80 mm, the 6th wettest month. The snow cover usually melts away this month.

Climate of Smiths Falls by month
MonthHighLowRainWindDaylightVisit
January-5°-14°69 mm14 km/h9 h 8 min✦
February-3°-13°55 mm14 km/h10 h 21 min✦
March2°-7°60 mm14 km/h11 h 47 min✦
April10°0°79 mm14 km/h13 h 26 min✦✦
May18°7°80 mm13 km/h14 h 49 min✦✦✦
June23°12°90 mm10 km/h15 h 35 min✦✦✦
July26°15°92 mm10 km/h15 h 16 min✦✦✦
August25°14°83 mm10 km/h14 h 3 min✦✦✦
September21°10°87 mm11 km/h12 h 27 min✦✦✦
October14°4°90 mm13 km/h10 h 52 min✦✦
November7°-2°78 mm14 km/h9 h 29 min✦
December-1°-8°69 mm14 km/h8 h 48 min✦

Questions Readers Ask about Smiths Falls in May

Answered from the wire & the Almanac

What is the weather like in Smiths Falls in May?

Days average 18 °C (64 °F) and nights 7 °C (44 °F), with about 80 mm (3.1 in) of rain over the month. Highs rise 8° against April, to near 18°; nights run about 7°. Wet spells are common — about 80 mm, the 6th wettest month. The snow cover usually melts away this month.

Is May a good time to visit Smiths Falls?

The Almanac gives May 3 of 5 (fair). The best months are June and September.

How long are the days in Smiths Falls in May?

In mid-May the sun is up for about 14 h 49 min. The days are lengthening — from 8 h 48 min in December to 15 h 35 min in June.

Does it snow in Smiths Falls in May?

Hardly — May nights average 7 °C (44 °F), above freezing.

What should I pack for Smiths Falls in May?

Layers, a warm coat and stout boots, plus a good raincoat — it is a wet month.

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The Editor’s Remark

“Weather is the only news that never grows stale. Each morning the sky writes its own front page, and we at Wanted Weather are but its telegraph operators.”— J. Whitmore, Editor
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